Fill in details in the readme
Build the panel using JS

This is the preamble to having the panel be customizable.
Restructure the app.js file to be more organized

This also removes any jQuery requirements from the app code.
Show a splash page to begin with and add activate/deactivate board buttons

This splash page will eventually become the settings/config page, but for now it's very sparse. Deactivating the board doesn't really work right now because the content is overwritten by the interval render methods.